Minor typo in Environment.xml (#2911)

"taht" -> "that"

Author: JasonKnapp

xml/System/Environment.xml

@@ -1154,7 +1154,7 @@ The following example creates environment variables for the <xref:System.Environ
       </Parameters>
       <Docs>
         <param name="folder">One of the enumeration values that identifies a system special folder.</param>
-        <param name="option">One of the enumeration values taht specifies options to use for accessing a special folder.</param>
+        <param name="option">One of the enumeration values that specifies options to use for accessing a special folder.</param>
         <summary>Gets the path to the system special folder that is identified by the specified enumeration, and uses a specified option for accessing special folders.</summary>
         <returns>The path to the specified system special folder, if that folder physically exists on your computer; otherwise, an empty string ("").  
 
@@ -2369,4 +2369,4 @@ The following example creates environment variables for the <xref:System.Environ
       </Docs>
     </Member>
   </Members>
-</Type>
+</Type>